/*存放一些共用的css样式或者叫css初始化代码*/
html,body,ul,li,p,h1,form,img,input{
    margin:0;
    padding:0;

}
ul,ol{list-style:none}

a{text-decoration:none}

.fl{
    float:left;
}
.fr{
    float:right;
}
.clearfix:after{
    content:"";
    height:0;
    line-height:0;
    display:block;
    visibility:hidden;
    clear:both;
}
.clearfix{
    zoom:1;
}
.in_b{
    display: inline-block;
}
body{
   background-color: #f7f7f7;
}
